Nemotron 3 Ultra 550B A55B
openrouter The API that serves this model and sets the prices shown here. nvidia/nemotron-3-ultra-550b-a55b The model identifier to send in API requests. LLM Generates text from a prompt, so it can be compared with other LLMs on price and capability.Provider: nvidia · served via OpenRouter
Nothing to act on today. The cost is the checking: someone has to remember to look again next month, and the month after. Coolhand watches this model for you and automatically updates your agents to the most compatible replacement the moment a retirement is announced — one less thing on your list, permanently.
Sticker prices & cost-per-token
List rates as published by OpenRouter, before any volume or enterprise discounts.
$0.60
$3.60
262,144 tokens
182,520
tokens per response (includes reasoning tokens)
Open weights (restricted license)
NVIDIA Nemotron Open Model License
$0.20
Get this data free
Want to stay updated on price changes on this model? Pull this data free (no API key required) here:
curl "https://coolhandlabs.com/api/v2/inference_apis?q%5Bmodel_eq%5D=nvidia%2Fnemotron-3-ultra-550b-a55b&q%5Bsource_api_eq%5D=openrouter"Pricing History
| Effective | Price |
|---|---|
| Aug 16, 2026 – present | Input cost: $0.60 / 1M, Output cost: $3.60 / 1M, Cached input cost: $0.20 / 1M, Cache creation cost: $0.00 / 1M, 5-minute cache write cost: $0.00 / 1M, 1-hour cache write cost: $0.00 / 1M, Reasoning output cost: $0.00 / 1M, Cache storage cost: $0.00 / 1M/hr |
History
No automated scan changes recorded yet.
| Date | Changed by | What changed |
|---|---|---|
| Aug 16, 2026 | Unknown | Initial record created |
Source
https://models.dev/api.json (models.dev provider 'openrouter', bulk import 2026-08-13)Comparable models
No comparable models identified yet.
Reliability
No reliability incidents recorded in the last 90 days.
Frequently asked questions
Nemotron 3 Ultra 550B A55B (nvidia via OpenRouter) costs $0.60 per 1M input tokens and $3.60 per 1M output tokens, as last published by OpenRouter.
Nemotron 3 Ultra 550B A55B has a context window of 262,144 tokens (the maximum combined input and output it can handle in a single request).
Nemotron 3 Ultra 550B A55B can generate up to 182,520 tokens in a single response. Reasoning (thinking) tokens count toward this limit.
Nemotron 3 Ultra 550B A55B accepts text as input and produces text as output, as recorded in the Coolhand catalog.
Yes — the weights of Nemotron 3 Ultra 550B A55B can be downloaded under the NVIDIA Nemotron Open Model License license. Check the license terms for any limits on commercial use.
No, Nemotron 3 Ultra 550B A55B is currently active with no announced deprecation date.
Call GET https://coolhandlabs.com/api/v2/inference_apis?q[source_api_eq]=openrouter&q[model_eq]=nvidia%2Fnemotron-3-ultra-550b-a55b — free, no API key required, and scoped to just this model since source_api and model together are unique. See https://coolhandlabs.com/docs for the full REST API reference.
Coolhand also tracks Nemotron 3 Super Free, NVIDIA Nemotron Nano 3 30B, NVIDIA Nemotron Nano 9B v2, NVIDIA Nemotron 3 Super 120B A12B, Nemotron 3.5 Lightning Free, and Nemotron 3.5 Content Safety (free) from nvidia. Some may already be deprecated, so check each model's status alongside its current pricing.
| Model | Input cost | Output cost | Context window | Max output tokens | Status |
|---|---|---|---|---|---|
| Nemotron 3 Super Free via OpenCode | $0.00/1M $0.0000000000 | $0.00/1M $0.0000000000 | 204,800 | 128,000 |
Deprecated Aug 12, 2026
|
| NVIDIA Nemotron Nano 3 30B via Bedrock | $0.06/1M $0.0000000600 | $0.24/1M $0.0000002400 | 262,144 | 8,192 | Active |
| NVIDIA Nemotron Nano 9B v2 via Bedrock | $0.06/1M $0.0000000600 | $0.23/1M $0.0000002300 | 131,072 | 8,192 | Active |
| NVIDIA Nemotron 3 Super 120B A12B via Bedrock | $0.15/1M $0.0000001500 | $0.65/1M $0.0000006500 | 262,144 | 131,072 | Active |
| Nemotron 3.5 Lightning Free via OpenCode | $0.00/1M $0.0000000000 | $0.00/1M $0.0000000000 | 262,144 | 262,144 | Active |
| Nemotron 3.5 Content Safety (free) via OpenRouter | $0.00/1M $0.0000000000 | $0.00/1M $0.0000000000 | 128,000 | 8,192 | Active |
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